# One base angle of an isosceles triangle measures 50°. What is the number of degrees in the vertex angle?

##### 1 Answer

Nov 21, 2015

80°

#### Explanation:

In an isosceles triangle, the base angles have the same degree measure and are, as a result, equal. Also the sum of the interior angles of any triangles is 180°, therefore in this case:

Measure of vertex angle in degrees: